Finding the Fourth Proportional to 30,670.35, 42,329.57 and 17,242.71

Step by Step Solution

1. Step 1: Write the proportion equation
   30,670.35 : 42,329.57 = 17,242.71 : x
2. Step 2: Convert to fraction form
   30,670.35/42,329.57 = 17,242.71/x
3. Step 3: Cross multiply
   30,670.35x = 42,329.57 × 17,242.71
4. Step 4: Simplify right side
   30,670.35x = 729,876,413.72
5. Step 5: Solve for x
   x = 729,876,413.72/30,670.35
6. Step 6: Final answer
   x = 23,797.46